Dec 04 12:01:23.397 INFO checking r2p2/rust-mandelbrot against try#1df97983eb2057dc6a8f7eb364e263b51ae23230 for pr-56481
Dec 04 12:01:23.397 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56481/worker-0/try#1df97983eb2057dc6a8f7eb364e263b51ae23230:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-0/pr-56481/try#1df97983eb2057dc6a8f7eb364e263b51ae23230:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +1df97983eb2057dc6a8f7eb364e263b51ae23230-alt check --frozen --all --all-targets" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 04 12:01:23.840 INFO [stdout] 6711b18f81405c4f5798161080deb4ff553c960bf5bb1877d3378abc6fe40311
Dec 04 12:01:23.848 INFO running `"docker" "start" "-a" "6711b18f81405c4f5798161080deb4ff553c960bf5bb1877d3378abc6fe40311"`
Dec 04 12:01:25.990 INFO [stderr] usermod: no changes
Dec 04 12:01:26.199 INFO [stderr]     Checking num-bigint v0.1.40
Dec 04 12:01:26.199 INFO [stderr]     Checking png v0.9.0
Dec 04 12:01:28.536 INFO [stderr]     Checking num-rational v0.1.39
Dec 04 12:01:29.214 INFO [stderr]     Checking num v0.1.40
Dec 04 12:01:29.216 INFO [stderr]     Checking image v0.15.0
Dec 04 12:01:33.632 INFO [stderr]     Checking mandelbrot v0.1.0 (/source)
Dec 04 12:01:34.875 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 8.86s
Dec 04 12:01:34.883 INFO [stderr] su: No module specific data is present
Dec 04 12:01:36.629 INFO running `"docker" "inspect" "6711b18f81405c4f5798161080deb4ff553c960bf5bb1877d3378abc6fe40311"`
Dec 04 12:01:36.999 INFO running `"docker" "rm" "-f" "6711b18f81405c4f5798161080deb4ff553c960bf5bb1877d3378abc6fe40311"`
Dec 04 12:01:37.341 INFO [stdout] 6711b18f81405c4f5798161080deb4ff553c960bf5bb1877d3378abc6fe40311